超细钨酸锌纳米棒的制备及其光催化性能

Preparation and Photocatalytic Activity of the Ultrafine Zinc Tungstate Nanorod

在含有溴化十六烷基三甲基铵(CTAB)的水溶液中,通过水热法制备了超细钨酸锌(ZnWO4)纳米棒。用X射线衍射、扫描电子显微镜和紫外可见漫反射光谱表征了所制备的样品。在汞灯照射下,通过降解甲基橙(MO)检测了超细ZnWO4纳米棒的光催化活性。结果表明,在CTAB胶束作用下,ZnWO4纳米棒更细更长,超细ZnWO4纳米棒光催化活性比普通ZnWO4纳米棒更强,在同样条件下,前者对MO的降解率为90.2%,后者为50.%。

The uhrafine zinc tungstate （ZBWO4 ） nanorod was synthesized in an aqueous solution containing cetyhrimethylammonium bromide （CTAB） using a hydrothermal method. The prepared samples were characterized by X-ray diffraction, scanning electron microscopy and UV-Visible diffuse reflectance spectroscopy. The resulting ZnWO4 sample was examined as photocatalyst for degradation of methyl orange in aqueous solutions under mercury lamp irradiation. The results show that the ZnWO4 nanorods are thin and long under the action of CTAB micelle. The photocatalytic activity of the uhrafine ZnWO4 nanorod is higher than that of the common ZnWO4 nanorod.